The Right call was absolutely mad, but I've be made as the penalty didn't contribute to the goal being scored. Having a goal disallowed and receiving a 5 minute major totally turned the momentum. If the Ref makes the call right away when it happens it wouldn't hurt MSUM as much. With the Ref missing the Call, there is no other way to call it.
I laugh at the MSUM blaming the Ref for the game. The Ref actually tried to help by missing the call, it was only after UND challenged the call that they had not choice, but to make the call.